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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Muskegon Heights

Chloromethane is an industrial solvent, aerosol propellant and a refrigerant. It also forms as a byproduct of water disinfection. The EPA classifies chloromethane as possibly carcinogenic to humans.

 

7

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND30ND
2015ND20ND
2016N/A00N/A
2017N/A00N/A
2018ND10ND
2019ND10ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 2.69 ppb

The EWG Health Guideline of 2.69 ppb for chloromethane was defined by the Environmental Protection Agency as a benchmark for testing under the Unregulated Contaminant Monitoring Rule program. This health guideline protects against cancer.

ppb = parts per billion

All test results

Date Lab ID Result
2014-03-26LLF12812ND
2014-07-2935148146001AMND
2014-10-2235160676001AMND
2015-01-2135172355001AMND
2015-04-1535184105001AMND
2018-03-27LLH72861ND
2019-03-13LLI29089ND